The crazy yet lovable bastard found in Class 3-E from the anime "Assassination Classroom". He is absurdly intelligent and confident, especially for his age, and is very found of starting fights.
Word commonly used when a person speaks inarticulately and is not understood, and badly needs to realize that it is not your hearing at fault but his or her own indecipherable speech.
Your walking down the street in Chinatown when a short Chinese man walks up to you and starts asking you for directions but you cannot understand him so you space out for the next couple minutes until he stops talking. And then you say Awabaduh after staring at him for ten minutes.